0,4

Multiplication of the lower triangular matrix A157898 from the left by A000012 means: these are partial column sums of A157898.

Row sums = A105635(n+1).

T(n,k) = sum_{l=0..n} A000012(n,l)*A157898(l,k).

First few rows of the triangle, n>=0:

1;

1, 1;

2, 2, 2;

2, 4, 4, 4;

3, 6, 10, 8, 8;

3, 9, 16, 24, 16, 16;

4, 12, 28, 40, 56, 32, 32;

4, 16, 40, 80, 96, 128, 64, 64;

5, 20, 60, 120, 216, 224, 288, 128, 128;

5, 25, 80, 200, 336, 560, 512, 640, 256, 256;

Sequence in context: A074912 A006643 A080217 this_sequence A072376 A131883 A113452

Adjacent sequences: A157898 A157899 A157900 this_sequence A157902 A157903 A157904

nonn,tabl

Gary W. Adamson & Roger L. Bagula (qntmpkt(AT)yahoo.com), Mar 08 2009

Edited by the Associate Editors of the OEIS, Apr 10 2009